Professor Hans Riesen

+61 2 6268 8679
+61 2 6268 8017


Room 212 PEMS North (Bldg 22) School of Physical, Environmental and Mathematical Sciences, UNSW Canberra, Australian Defence Force Academy, PO Box 7916, Canberra BC ACT 2610, AUSTRALIA

Scholarships of $35,000 (AUD) are available for PhD students who achieved H1 /High Distinction in their UG program and/or have completed a Masters by Research). If you are interested, contact me at


Scholarships of $35,000 (AUD) are available for PhD students who achieved H1 /High Distinction in their UG program and/or have completed a Masters by Research). If you are interested, contact me at


Hans Riesen is Professor in Physical Chemistry/Chemical Physics (Laser Spectroscopy) at UNSW Canberra. He has been appointed to the position of Associate Dean (Research) in May 2012.

Professor Riesen is a graduate of the University of Berne, Switzerland. He obtained his PhD (Dr. phil.-nat.) in 1987 for research on the optical spectroscopy of exchange coupled binuclear chromium(III) complexes. From 1987 to 1998 he worked at the Research School of Chemistry of The Australian National University as a Post-doctoral Fellow, Research Fellow, ARC Research Fellow and Fellow with Professor Elmars Krausz. In 1998 he joined UNSW Canberra as a Lecturer.

Over the last 25 years, Hans Riesen's research has been mostly focused on the laser spectroscopy, e.g. spectral hole-burning, of transition metal ion doped insulators/wide band gap semiconductors. He is particularly interested in light-induced changes in the solid state that have potential applications in ultra-high density optical data storage and optical signal processing. Very recently Hans and some of his team have studied the generation of slow and fast light by transient hole-burning.

With the advent of the Australian Synchrotron, Hans has also become a user and strong supporter of synchrotron science. In recent years, Hans Riesen and his team have discovered a novel X-ray storage technology with applications in personal and clinical dosimetry, and medical imaging. A UNSW spin-off company (Dosimetry & Imaging Pty Ltd) is currently in the process of commercializing this technology. Hans Riesen is the author of over 130 journal articles in the field of laser spectroscopy of the solid state, three book chapters and  has several accepted international patents (USA, China and Australia).

WE Moerner


Book Chapters

Riesen HA; Liu Z, 2012, 'Optical Storage Phosphors and Materials for Ionizing Radiation', in Nenoi M (ed.), Current Topics in Ionizing Radiation Research, edn. Original, Intech, Rijeka, Croatia, pp. 625 - 648,

Krausz E; Riesen HA, 1999, 'Laser Spectroscopy', in Inorganic Electronic Structure and Spectroscopy, Vol. I. Methodology, edn. Original, John Wiley & Sons, New York, NY, pp. 307 - 352

Journal articles

Chowdhury N; Riesen N; Riesen H, 2019, 'Efficient Generation of Stable Sm2+ in Nanocrystalline BaLiF3:Sm3+ by UV- And X-Irradiation', Journal of Physical Chemistry C, vol. 123, pp. 25477 - 25481,

Riesen N; Lockrey M; Badek K; Riesen H, 2019, 'On the origins of the green luminescence in the "zero-dimensional perovskite" Cs4PbBr6: Conclusive results from cathodoluminescence imaging', Nanoscale, vol. 11, pp. 4001 - 4007,

Zhang J; Riesen H, 2019, 'Photostimulated and persistent luminescence of samarium ions in BaFCl', Journal of Luminescence, vol. 207, pp. 188 - 194,

Zhang J; Riesen N; Kasim LT; Badek K; Riesen H, 2018, 'Mechanochemical preparation of nanocrystalline metal halide phosphors', Journal of Materials Science, vol. 53, pp. 13643 - 13659,

Riesen N; Pan X; Badek K; Ruan Y; Monro TM; Zhao J; Ebendorff-Heidepriem H; Riesen H, 2018, 'Towards rewritable multilevel optical data storage in single nanocrystals', Optics Express, vol. 26, pp. 12266 - 12276,

Zhang J; Riesen N; Riesen H, 2017, 'Mechanochemically prepared SrFCl nanophosphor co-doped with Yb3+ and Er3+ for detecting ionizing radiation by upconversion luminescence', Nanoscale, vol. 9, pp. 15958 - 15966,

Riesen H; Rebane A; Rajan RP; Hutchison W; Ganschow S; Szabo A, 2017, 'Ultra-slow light propagation by self-induced transparency in ruby in the superhyperfine limit', Optics Letters, vol. 42, pp. 1871 - 1874,

Zhang J; Riesen H, 2017, 'Controlled Generation of Tm(2+) Ions in Nanocrystalline BaFCl:Tm(3+) by X-ray Irradiation.', J Phys Chem A, vol. 121, pp. 803 - 809,

Riesen H; Badek K; Monro TM; Riesen N, 2016, 'Highly efficient valence state switching of samarium in BaFCl:Sm nanocrystals in the deep UV for multilevel optical data storage', Optical Materials Express, vol. 6, pp. 3097 - 3108,

Zhang J; Riesen H, 2015, 'Mechanochemical preparation of nanocrystalline NaYF4:Gd3+/Yb3+/Tm3+: An efficient upconversion phosphor', Chemical Physics Letters, vol. 641, pp. 1 - 4,

Rajan RP; Rebane A; Riesen H, 2015, 'Rapid switching between slow and fast light by frequency-modulated transient spectral hole-burning', JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, vol. 32, pp. 2019 - 2024,

Riesen N; François A; Badek K; Monro TM; Riesen H, 2015, 'Photoreduction of Sm 3+ in Nanocrystalline BaFCl', The Journal of Physical Chemistry A, vol. 119, pp. 6252 - 6256,

Wang X; Riesen H, 2015, 'Mechanochemical synthesis of an efficient nanocrystalline BaFBr:Eu2+ X-ray storage phosphor', RSC Advances, vol. 5, pp. 85506 - 85510,

Wang X; Riesen H; Stevens-Kalceff MA; Rajan RP, 2014, 'Room Temperature Hole-Burning of X-ray Induced Sm in Nanocrystalline Ba Sr FCl Br :Sm Prepared by Mechanochemistry', The Journal of Physical Chemistry A, vol. 118, pp. 140924065404004 - 140924065404004,

Wang X-L; Liu Z-Q; Stevens-Kalceff MA; Riesen H, 2014, 'Mechanochemical Preparation of Nanocrystalline BaFCl Doped with Samarium in the 2+ Oxidation State', Inorganic Chemistry, vol. 53, pp. 8839 - 8841,

Riesen H; Wiebeler C; Schumacher S, 2014, 'Optical spectroscopy of graphene quantum dots: The case of C132', Journal of Physical Chemistry A, vol. 118, pp. 5189 - 5195,

Liu Z; Wang X; Riesen H; Stevens-Kalceff MA, 2013, 'Mechanochemical synthesis of nanocrystalline bafcl:sm storage phosphor by ball milling', Chemical Physics Letters, vol. 588, pp. 193 - 197,

Rajan RP; Riesen H; Rebane A, 2013, 'Controlling pulse delay by light and low magnetic fields: Slow light in emerald induced by transient spectral hole-burning', Optics Letters, vol. 38, pp. 4546 - 4549,

Riesen HA; Liu Z; Stevens-Kalceff MA; Wang X, 2013, 'A facile method for the preparation of Eu2+-doped nanocrystalline BaFCl', Materials Research Bulletin, vol. 48, pp. 3691 - 3694,

Carceller I; Hutchison WD; Riesen HA, 2013, 'Temperature dependence of the chromium(III) R1 linewidth in emereld', Chemical Physics Letters, vol. 564, pp. 33 - 36,

Liu Z; Stevens-Kalceff MA; Riesen HA, 2013, 'Effects of Postannealing on the Photoluminescence Properties of Coprecipitated Nanocrystalline BaFCl:Sm3+', Journal of Physical Chemistry A, vol. 117, pp. 1930 - 1934,

Riesen H; Rebane A; Szabo A; Carceller I, 2012, 'Slowing light down by low magnetic fields: pulse delay by transient spectral hole-burning in ruby', Optics Express, vol. 20, pp. 19039 - 19049,

Liu Z; Stevens-Kalceff MA; Riesen H, 2012, 'Photoluminescence and Cathodoluminescence Properties of Nanocrystalline BaFCl:Sm3+ X-ray Storage Phosphor', Journal of Physical Chemistry C, vol. 116, pp. 8322 - 8331,

Stevens-Kalceff MA; Liu Z; Riesen HA, 2012, 'Cathodoluminescence microanalysis of irradiated microcrystalline and nanocrystalline samarium doped BaFCl', Microscopy and Microanalysis, vol. 18, pp. 1229 - 1238,

Riesen H, 2011, 'Photoinduced electron transfer and persistent spectral hole-burning in natural emerald', Journal of Physical Chemistry A, vol. 115, pp. 5364 - 5370,

Riesen HA; Monks-Corrigan T; Manson NB, 2011, 'Temperature dependence of the R1 linewidth in Al 2O3:Mn4+: A spectral hole-burning and FLN study', Chemical Physics Letters, vol. 515, pp. 241 - 244,

Riesen H; Sellars M; Manson N, 2010, 'Physics Procedia: Preface', Physics Procedia, vol. 3, pp. 1522 - 1523,

Riesen HA; Szabo A, 2010, 'Probing hyperfine interactions in 53Cr(III) doped Al2O3 by spectral hole-burning in low magnetic fields.', Physics Procedia, vol. 3, pp. 1577 - 1582,

Yildirim B; Riesen HA, 2010, 'Spectral Hole-burning Properties of LiGa5O8:Co2+ Nanocrystallites', Physics Procedia, vol. 3, pp. 1539 - 1545,

Riesen HA; Yildirim B, 2010, 'Persistent spectral hole-burning in diffuse reflection: application to nanocrystalline LiGa5O8:Co2+', Journal of Physical Chemistry Letters, vol. 1, pp. 2380 - 2384,

Riesen HA; Szabo A, 2010, 'Revisiting the temperature dependence of the homogeneous R1 linewidth in ruby', Chemical Physics Letters, vol. 484, pp. 181 - 184,

Riesen HA; Badek K; Stevens-Kalceff MA; Badek K, 2010, 'Correlation between inhomogeneous width and crystallite size: 2E->4a2 luminescence of Co(II) in nanocrystalline ZnAl2O4/Co(II)', Chemical Physics Letters, vol. 501, pp. 103 - 107,

Liu Z; Massil T; Riesen HA, 2010, 'Spectral hole-burning properties of Sm2+ ions generated by X-rays in BaFCl:Sm3+ nanocrystals', Physics Procedia, vol. 3, pp. 1539 - 1545,

Riesen HA; Sellers M; Manson NB, 2010, 'Preface', Physics Procedia, vol. 3, pp. 1521 - 1523,

Riesen HA; Riesen N; Schubert NB; Szabo AM, 2009, 'Transient spectral hole-burning studies of the R2 line in ruby', Chemical Physics Letters, vol. 475, pp. 10 - 14,

Riesen H, 2008, 'On the 6A1 4T1 luminescence of Fe3+ in disordered nanocrystalline LiGa5O8 prepared by a combustion reaction', Chemical Physics Letters, vol. 461, pp. 218 - 221,

Riesen HA; Rae AD, 2008, 'Revisiting the crystal structure and thermal properties of NaMgAl(oxalate)3 [Closed Circle] 9H2O/Cr(III): An extraordinary spectral hole-burning material', Journal of the Royal Chemical Society, Dalton Transactions, pp. 4717 - 4722,

Riesen HA; Dubicki L, 2008, 'Probing the R Lines in Tris(acetylacetonato) Chromium(III) and Tris(3-bromo-acetylacetonato) Chromium(III) by Luminescence and Excitation Line Narrowing Spectroscopy', Journal of Physical Chemistry A, vol. 112, pp. 10287 - 10293,

Riesen HA, 2008, 'On the (6)A(1)', Chemical Physics Letters, vol. 461, pp. 218 - 221

Riesen HA; Hayward BF; Szabo AM, 2007, 'Side-hole to anti-hole conversion in time-resolved spectral hole burning of ruby: Long-lived spectral holes due to ground state level population storage', Journal of Luminescence, vol. 127, pp. 655 - 664,

Riesen H; Kaczmarek WA, 2007, 'Efficient x-ray generation of Sm2+ in nanocrystalline BaFCl/Sm3+: A Photoluminescent x-ray storage phosphor', Inorganic Chemistry, vol. 46, pp. 7235 - 7237,

Kaczmarek WA; Riesen HA, 2006, 'Structural and morphological properties of RE3+ doped sesquioxide Y2O3 spherical nanoparticles', Journal of Materials Science, vol. 41, pp. 8320 - 8328,

Riesen H, 2006, 'Hole-burning spectroscopy of coordination compounds', Coordination Chemistry Reviews, vol. 250, pp. 1737 - 1754,

Monks-Corrigan T; Riesen HA, 2006, 'Host deuteration effects in non-photochemical spectral hole-burning in the R1-line of [Cr(oxalate)3]3- in ethylene glycol/water', Chemical Physics Letters, vol. 419, pp. 321 - 325,

Hayward BF; Riesen HA, 2005, 'Side-hole to anti-hole conversion in time-resolved transient spectral hole-burning of emerald: ground state level versus excited state population storage in low magnetic fields', Physical Chemistry Chemical Physics, vol. 7, pp. 2579 - 2586,

Hughes JL; Krausz E; Smith PJ; Pace R; Riesen HA, 2005, 'Probing the lowest energy chlorophyll a states of Photosystem II via selective spectroscopy: new insights on P680', Photosynthesis Research, vol. 84, pp. 93 - 98,

Riesen H, 2004, 'Progress in Hole-Burning Spectroscopy of Coordination Compounds', Structure and Bonding, vol. 107, pp. 179 - 205,

Riesen HA, 2004, 'Narrow spectral holes in a concentrated binuclear chromium(III) compound: studies of the 2E4A24A24A2 transition in single crystals of [LCr(III)([mu]-OH)3Cr(III)L](ClO4)3 . H2O (L=1,4,7-trimethyl-1,4,7-triazacyclononane)', Chemical Physics Letters, vol. 383, pp. 512 - 517,

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